Covestro Deutschland Ag

Covestro Intellectual Property Gmbh & Co. Kg

Karl Vetterle

Serguei Kostromine

Thomas Fäcke

Thomas Rölle

Wieland Hovestadt

Thomas Roelle

Therese Klobutowski

The invention relates to a scaled holographic medium comprising a layer construction B'-C1&#x2032;-C2&#x2032;, to a process for producing the sealed holographic medium, to a kit of parts, to a layer construction comprising a protective layer and a substrate layer and to the use thereof.

System consisting of two UV-curing dry-transfer coating layers for the protection of a hologram in a photopolymer film composite

The invention relates to a protective layer comprising a photopolymer layer B and an at least partly cured protective layer C, to a process for producing the layer construction according to the invention, to a kit of parts, to the use of an at least partly cured protective layer C for protection of a photopolymer layer B and to optical displays and security documents comprising the layer construction according to the invention.

Protective layer for photopolymer

Growing community of inventors

Leverkusen, Germany

Karl Vetterle